$260+ Cheap flights from Seattle (SEA) to Helsinki (HEL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HEL
Oct 17 — Oct 241
Round-trip
1 adult, Economy
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Find cheap flights from Seattle to Helsinki with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Seattle to Helsinki
Cheapest
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Cheapest flights from Seattle to HelsinkiExplore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
Explore the most affordable flight options available from Seattle to Helsinki. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2026.
This Mytrip deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:35 pm -
2 stops21h 50m
Sun 11/2210:00 am -
2 stops17h 00m
Deal found 9/13![Multiple Airlines logo]()
$655
This Ticket deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/273:55 pm -
1 stop23h 35m
Sat 10/109:05 pm -
1 stop26h 40m
Deal found 9/15![Scandinavian Airlines logo]()
$690
This Icelandair deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm -
1 stop21h 20m
Thu 10/153:00 pm -
1 stop12h 55m
Deal found 9/16![Icelandair logo]()
$733
This Mytrip deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/273:35 pm -
3 stops24h 05m
Tue 11/37:20 am -
3 stops19h 40m
Deal found 9/12![Multiple Airlines logo]()
$746
This Mytrip deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:50 am -
3 stops31h 15m
Wed 10/216:50 pm -
3 stops33h 42m
Deal found 9/12![Multiple Airlines logo]()
$753
This oojo deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/43:55 pm -
1 stop32h 40m
Wed 10/216:10 am -
2 stops26h 54m
Deal found 9/13![Scandinavian Airlines logo]()
$772
This Mytrip deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/12:35 pm -
3 stops24h 55m
Sun 11/83:25 pm -
3 stops35h 35m
Deal found 9/16![Multiple Airlines logo]()
$793
Best flights from Seattle to HelsinkiDiscover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
Discover carefully curated flight deals from Seattle to Helsinki that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 17, 2026.
This Scandinavian Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/137:15 am -
2 stops22h 10m
Wed 3/247:00 am -
3 stops24h 02m
Deal found 9/12![Scandinavian Airlines logo]()
$851
This Icelandair deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm -
1 stop21h 20m
Thu 10/153:00 pm -
1 stop12h 55m
Deal found 9/14![Icelandair logo]()
$872
This United deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/99:05 am -
2 stops23h 40m
Wed 11/187:05 am -
1 stop14h 55m
Deal found 9/12![Multiple Airlines logo]()
$876
This Turkish Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/107:05 pm -
1 stop37h 05m
Tue 11/177:05 pm -
1 stop32h 05m
Deal found 9/12![Turkish Airlines logo]()
$883
This United Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/172:50 pm -
1 stop17h 55m
Thu 3/412:35 pm -
2 stops21h 39m
Deal found 9/16![United Airlines logo]()
$889
This Scandinavian Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/710:51 am -
2 stops18h 29m
Wed 10/147:15 am -
3 stops22h 49m
Deal found 9/14![Scandinavian Airlines logo]()
$865
This United deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/82:50 pm -
1 stop17h 55m
Mon 11/1612:35 pm -
2 stops39h 47m
Deal found 9/16![Multiple Airlines logo]()
$880
This Scandinavian Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1211:00 am -
2 stops37h 35m
Tue 11/176:15 am -
2 stops25h 49m
Deal found 9/12![Scandinavian Airlines logo]()
$866
This Scandinavian Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/177:27 am -
2 stops32h 08m
Sun 11/226:15 am -
2 stops27h 42m
Deal found 9/14![Scandinavian Airlines logo]()
$866
This Scandinavian Airlines deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/810:39 am -
2 stops18h 46m
Mon 11/167:00 am -
3 stops23h 13m
Deal found 9/16![Scandinavian Airlines logo]()
$877
This Scandinavian Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:51 am -
2 stops18h 29m
Wed 11/47:00 am -
3 stops23h 04m
Deal found 9/14![Scandinavian Airlines logo]()
$892
Last-minute flights from Seattle to HelsinkiDiscover last-minute flight deals from Seattle to Helsinki. Data last updated September 17, 2026 and is based on user searches.
Discover last-minute flight deals from Seattle to Helsinki. Data last updated September 17, 2026 and is based on user searches.
This Ticket deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Ticket is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/273:55 pm -
1 stop23h 35m
Sat 10/109:05 pm -
1 stop26h 40m
Deal found 9/15![Scandinavian Airlines logo]()
$690
This oojo deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/43:55 pm -
1 stop32h 40m
Wed 10/216:10 am -
2 stops26h 54m
Deal found 9/13![Scandinavian Airlines logo]()
$772
This Icelandair deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Icelandair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/113:40 pm -
1 stop21h 20m
Thu 10/153:00 pm -
1 stop12h 55m
Deal found 9/16![Icelandair logo]()
$733
This Mytrip deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/145:50 am -
3 stops31h 15m
Wed 10/216:50 pm -
3 stops33h 42m
Deal found 9/12![Multiple Airlines logo]()
$753
This Cheapflightsfares deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/143:40 pm -
1 stop12h 20m
Wed 10/213:00 pm -
1 stop12h 55m
Deal found 9/12![Icelandair logo]()
$829
This Mytrip deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/273:35 pm -
3 stops24h 05m
Tue 11/37:20 am -
3 stops19h 40m
Deal found 9/12![Multiple Airlines logo]()
$746
This oojo deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/277:15 am -
2 stops23h 10m
Tue 11/34:05 pm -
2 stops40h 59m
Deal found 9/12![Scandinavian Airlines logo]()
$805
One-way flights from Seattle to HelsinkiSearch for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
Search for one-way flight options from Seattle to Helsinki. Find affordable one-way fares based on user searches. Data last updated September 17, 2026.
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/43:55 pm -
2 stops38h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Multiple Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/43:55 pm -
2 stops45h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/16![Scandinavian Airlines logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/22:35 pm -
3 stops21h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/32:35 pm -
3 stops32h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$374
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/12:50 pm -
2 stops33h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$385
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/314:10 pm -
2 stops20h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$388
This Kiwi.com deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:40 pm -
3 stops30h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Multiple Airlines logo]()
$392
Find flight deals from Seattle to Helsinki
Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Helsinki (HEL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 17, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $655 (Mytrip) |
One-way from | $260 (Kiwi.com) |
Popular in | June |
Cheapest in | January |
Average price | $743 |
Good round-trip deal | $2,116 or less |
Good one-way deal | $533 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Seattle to Helsinki that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 17, 2026.
Use the filters below to find and compare flights from Seattle to Helsinki that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sun 10/4
3:55 pm-11:50 pm
2 stops45h 55m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$265
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Fri 1/1
2:50 pm-10:30 am
2 stops33h 40m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$385
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Thu 12/3
8:00 pm-3:20 pm
1 stop33h 20m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$493
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Thu 12/17
2:35 pm-8:05 pm
2 stops43h 30m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$554
Quickest round-trip
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sun 1/31
2:35 pm-1:00 pm
1 stop12h 25m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$575
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sun 1/31
7:05 pm-11:20 am
1 stop30h 15m
Helsinki-Vantaa
Wed 12/31
12:00 am-2:00 pm
Nonstop0h 00m
$584
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Sat 3/13
7:15 am-3:25 pm
2 stops22h 10m
Helsinki-Vantaa
Wed 3/24
7:00 am-10:02 pm
3 stops24h 02m
$851
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Wed 10/7
10:51 am-3:20 pm
2 stops18h 29m
Helsinki-Vantaa
Wed 10/14
7:15 am-8:04 pm
3 stops22h 49m
$865
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Thu 11/12
11:00 am-10:35 am
2 stops37h 35m
Helsinki-Vantaa
Tue 11/17
6:15 am-10:04 pm
2 stops25h 49m
$866
SeattleHelsinki
SEA Seattle/Tacoma Intl - HEL Helsinki-Vantaa
SEAHEL
Seattle/Tacoma Intl
Tue 11/17
7:27 am-1:35 am
2 stops32h 08m
Helsinki-Vantaa
Sun 11/22
6:15 am-11:57 pm
2 stops27h 42m
$866
Showing 1-10 of 17 resultsSorted by cheapest first
Compare providers for flights from Seattle to Helsinki
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Helsinki in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Seattle-Helsinki flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Helsinki flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Helsinki flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Seattle-Helsinki flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Helsinki flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Seattle to Helsinki
Have a flexible travel schedule? Discover the best time to fly to Helsinki from Seattle with our price prediction graph.
SEA-HEL
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Seattle to Helsinki
How far ahead should I book a flight from Seattle to Helsinki?
The best time to book flights from Seattle to Helsinki is 13 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from Seattle to Helsinki?
Currently, January is the cheapest month in which you can book a flight from Seattle to Helsinki (average of $543). Flying from Seattle to Helsinki in June is currently the most expensive (average of $1,178). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from SEA to HEL?
Find hourly flight availability from Seattle to Helsinki. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 17, 2026.
When flying from Seattle to Helsinki, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Reviews of airlines servicing Helsinki
Get insights into the airlines that provide service to Helsinki. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Helsinki. Reviews last updated September 17, 2026.
Get a feel of what it's like to fly with Delta,Finnair, andScandinavian Airlines from Seattle to Helsinki by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
7.8
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Overall
7.8
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Food
7.2
Reviews
1 / 20
10.0
ExcellentAnonymous,May 2026
SEA - KOA
Related info for your journey
Find useful and relevant information for your journey from Seattle to Helsinki. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Helsinki?
Book flights to Helsinki if you plan to visit one of these locationsVantaa
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Complete your trip
Complete your trip to Helsinki by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Seattle to Helsinki, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Helsinki
Explore flights to Helsinki departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 17, 2026.
Seattle and Helsinki flights
Browse other Seattle and Helsinki flight options. Last updated on September 17, 2026.
Other flights from Seattle
Browse through other flights departing from Seattle. Flights are based on user searches made on Cheapflights and were last updated on September 17, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Seattle to Helsinki
Discover the top 4 airlines that operate flights from Seattle to Helsinki. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 17, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$353 | Average$571 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$524 | Average$908 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$731 | Average$1,069 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$845 | Average$1,188 | FlexibilityNo cancel fee | On-time76% |